The use of powerfull rotary drives or the use of oscilators requires the application of heavy duty casings. We offer two types of casings; Double-walled casings and Single-walled casingDouble walled casings can be used universally, as they are designed especially for transmitting high rotational and vertical forces as created by the rig rotary drives or oscillations .The use of double walled casings ensures a flush drill string.Single walled casings can be used for applications where weight reduction is important.

With a group of engineers and skilled workers with years of experience in engineering and construction design, our products are widely recognized and trusted by users. In the domestic market, we are the main supplier for Sany, XCMG, Zoomlion, Yutong, Sunward and Foton. In addition, our products are widely exported to the USA, Nea Zealand, Australia, Brazil, Souteast Asia, Middle East, Brazil, Russia and Afica, etc.